Ancient Monuments

History on the Ground

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Blaen Cwmsymlog Lead and Silver Mine

A Scheduled Monument in Trefeurig, Ceredigion

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Latitude: 52.4368 / 52°26'12"N

Longitude: -3.9062 / 3°54'22"W

OS Eastings: 270515

OS Northings: 283795

OS Grid: SN705837

Mapcode National: GBR 90.MLWG

Mapcode Global: VH4FG.70TT

Entry Name: Blaen Cwmsymlog Lead and Silver Mine

Scheduled Date: 27 December 2001

Source: Cadw

Source ID: 1697

Cadw Legacy ID: CD201

Schedule Class: Water Supply and Drainage

Category: Dam

Period: Post Medieval/Modern

County: Ceredigion

Community: Trefeurig

Traditional County: Cardiganshire


The monument consists of Blaencwmsymlog lead and silver mine, which was operated in conjunction with Cwmsymlog, immediately to its west. Together they were among the most important lead and silver mines in Wales, described by Lewis Morris in 1747 as 'the richest in lead and silver of any in His Majesty's Dominions'. The veins were probably worked in prehistoric or Roman times and the mine is well documented from 1585, when the Mines Royal Company began operating here, to its final closure in 1901. There are several well preserved surface remains and there is potential for important below ground evidence to survive. Features within the scheduled area include Taylor's shaft and waterwheel pit, a major reservoir dam built in 1848, several other shafts, and two ancient rock-cut levels.

The monument is of significance for its remains of a leading Welsh lead and silver mine, for its complex history, and for its excellent documentation. It is of national importance for its potential to enhance our knowledge of mining practices. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

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